Regulation of Intraocular Pressure after Water Drinking

Brucculeri, Michael; Hammel, Ted; Harris, Alon; Malinovsky, Victor E.; Martin, Bruce

doi:10.1097/00061198-199904000-00005

Cited by 45 publications

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“…It is known that oral water loading transiently elevates intraocular pressure (IOP) through mechanisms that remain unexplained. 2 Water loading due to changed eating habits and periods may affect IOP, tear secretion, and, maybe, corneal and anterior chamber parameters.…”

Section: Introductionmentioning

confidence: 99%

Effect of altered eating habits and periods during Ramadan fasting on intraocular pressure, tear secretion, corneal and anterior chamber parameters

Kerimoğlu

Öztürk

Gündüz

et al. 2009

Eye

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Purpose To determine whether altered eating habits and periods, especially the pre-dawn meal, during Ramadan fasting have any significant effect on intraocular pressure (IOP), tear secretion, corneal and anterior chamber parameters. Methods IOP, basal tear secretion (BTS), reflex tear secretion (RTS), and Pentacam measurements of 31 healthy volunteers were performed at 0800 and 1600 hours during Ramadan fasting and 1 month later during non-fasting period. Results Comparison of measurements between fasting and non-fasting periods at 0800 hours revealed significantly higher values for IOP (P ¼ 0.005), RTS (P ¼ 0.006), and BTS (P ¼ 0.014) during fasting. Conversely at 1600 hours, IOP was significantly lower during fasting (P ¼ 0.013) and no statistically significant difference was noted for RTS and BTS. IOP showed a diurnal variation of 2.45 mmHg (Po0.001) and BTS showed a 3.06 mm decrease (P ¼ 0.04) during the fasting period. No significant differences could be found in the corneal and anterior chamber parameters during fasting and non-fasting periods. Conclusions Our results revealed that fluid loading at the pre-dawn meal during Ramadan fasting might increase the IOP and tear secretion in the early morning period and these values decrease remarkably at the end of 12 h of fasting due to dehydration.

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Section: Introductionmentioning

confidence: 99%

Effect of altered eating habits and periods during Ramadan fasting on intraocular pressure, tear secretion, corneal and anterior chamber parameters

Kerimoğlu

Öztürk

Gündüz

et al. 2009

Eye

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“…This increase has been posited to be caused by an increase in aqueous humor production or a reduction in aqueous humor outflow. Brucculeri et al (29) tested hypothesis that elevated IOP was determined by increased aqueous production resulting from a blood-ocular osmotic pressure gradient in 16 healthy volunteers. No variation in hematocrit, total plasma osmolality, or plasma colloid osmotic pressure was observed in this study, and the authors therefore concluded that neither vitreous hydration nor increased aqueous ultrafiltration was responsible for the increase in IOP.…”

Section: Discussionmentioning

confidence: 99%

Choroidal thickness variation in highly myopic eyes during the water drinking test

Germano¹,

Hatanaka²,

Susanna³

2016

Arquivos Brasileiros De Oftalmologia

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Purpose: To evaluate variations in choroidal thickness (CT) during the water drinking test (WDT) in emmetropic eyes (EE) and highly myopic eyes (ME) using spectral-domain optical coherence tomography (SD-OCT). Methods: Clinical trial performed at a tertiary care hospital comprising 30 randomly selected eyes. The WDT and SD-OCT macular scans were performed 10 and 45 min after water ingestion in 15 myopic and 15 EE of 15 healthy patients in each group. Primary study outcomes were average macular CT measured by SD-OCT and intraocular pressure (IOP) during the WDT. Results: The mean spherical equivalent refraction was 0.15 ± 0.24 D in emmetropic and -7.1 ± 1.75 D in ME (p<0.001). No statistical differences between EE and ME were observed during the WDT response. EE had higher CT compared with ME at the fovea (361.4 ± 55.4 vs 257.9 ± 95.3; p<0.001), 3 mm nasal to the fovea (158.0 ± 71.8 vs 122.5 ± 54.5; p=0.047), and 3 mm temporally to the fovea (310.6 ± 52.4 vs 247.6 ± 90.1; p=0.05). Regarding CT variation, significant differences in foveal CT at 10 min after water ingestion were observed in both EE and ME, with no statistically significant difference observed between groups. A moderate correlation between IOP peak during the WDT and CT was demonstrated in ME (r=0.52; p=0.04). Conclusions:No statistically significant differences in CT variation during the WDT were observed between EE and ME, indicating similar behavior of the choroidal bed during the WDT in both groups. Further, CT was thinner in highly ME, with CT variation unable to explain elevations in IOP observed during the WDT.

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“…Foi verificado ainda que após instilação de fluoresceína, seis horas antes da realização do TSH, havia um refluxo deste corante dez minutos após a ingestão de água, que seria causado pelo aumento da pressão venosa episcleral (11) . Outro trabalho (20) não encontrou alterações da pressão osmótica ou do hematócrito, nem correlação destas variáveis ou da osmolaridade do plasma com o aumento da PIO durante o TSH. Os autores concluíram que fatores que alterariam a drenagem do humor aquoso poderiam explicar o efeito da ingestão da água.…”

Section: Discussionunclassified

Influência do peso corporal e do índice de massa corporal no teste de sobrecarga hídrica

Meirelles¹,

Mendes²,

Álvares³

et al. 2008

Rev. bras.oftalmol.

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RESUMOObjetivo: Avaliar a influência do peso corporal e do índice de massa corporal (IMC) nos picos e na flutuação da pressão intra-ocular (PIO) no teste de sobrecarga hídrica (TSH) em pacientes com glaucoma primário de ângulo aberto (GPAA), glaucoma de pressão normal (GPN) e olhos normais (ON). Métodos: Estudo transversal em que foram avaliados 32 olhos de 32 pacientes com GPAA, 30 olhos de 30 pacientes com GPN e 20 olhos de 20 ON. Nenhum dos pacientes glaucomatosos havia iniciado o tratamento da doença. O TSH foi realizado às 17h, sendo avaliada a correlação entre o peso corporal e o IMC e os picos e a flutuação da PIO durante o TSH. Os resultados foram analisados através dos testes de Anova-fator único com teste de Bonferroni e correlação linear de Pearson. Foi considerado significativo valor de p menor que 0,05. Resultados: Não houve diferença significativa na idade (p=0,13), no peso corporal (p=0,13) e no IMC (p=0,83) entre os três grupos. Foi encontrada correlação estatisticamente significativa no grupo GPAA entre o peso corporal e a flutuação da PIO no TSH (p=0,02; r=-0,42) e entre o IMC e a flutuação da PIO no TSH (p=0,02; r=-0,41). Não houve correlação significativa entre o peso corporal e o IMC e os picos de PIO nos três grupos e entre o peso corporal e o IMC e a flutuação da PIO nos grupos GPN e ON.. Conclusão: Os resultados do presente estudo sugerem que o peso corporal e o IMC devem ser considerados ao se avaliar os resultados do TSH em portadores de GPAA e que pacientes portadores de GPAA com maior IMC e maior peso corporal podem apresentar menor flutuação da PIO no TSH.

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Regulation of Intraocular Pressure after Water Drinking

Cited by 45 publications

References 0 publications

Effect of altered eating habits and periods during Ramadan fasting on intraocular pressure, tear secretion, corneal and anterior chamber parameters

Effect of altered eating habits and periods during Ramadan fasting on intraocular pressure, tear secretion, corneal and anterior chamber parameters

Choroidal thickness variation in highly myopic eyes during the water drinking test

Influência do peso corporal e do índice de massa corporal no teste de sobrecarga hídrica

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